This quest is acquired in the Forgotten Caverns during The Descent main quest. You need to find 5 entries for the chronicles throughout the Deep Roads and the Uncharted Abyss.
The first entry is on the north side of the first bridge that you encounter in the Forgotten Caverns (this begins the quest)
The second entry can be found at the bottom of the ledge when you reach the second (collapsed) bridge within the Forgotten Caverns.
The third entry is located on a ledge within the Bastion of the Pure. As you enter the region, turn left and follow the path, keeping left, until you reach a cavern with numerous Cretahls. Continue following the path above them until you reach the ledge overlooking the entrance you came from. You’ll find the entry beside a barrel.
The fourth entry is in the north east section of the Bastion of the Pure, found at the entrance to the chamber which leads to an Arcane Horror.
The fifth entry can be found in the depths of a cliff in the north of the Bastion of the Pure. You will need to have completed the Expedition Table operation ‘Deep Roads Expeditions: Bastion of the Pure Excavation’ to reach it.
This guide for Dragon Age: Inquisition offers a detailed walkthrough of the main story and all side quests associated with each region, detailing easily missed features and hidden lore secrets along the way. The guide also covers all three main DLC: Jaws of Hakkon, The Descent, and Trespasser, and all dialogue choices throughout the game.
Inside this guide you will find:
Coming Soon! A detailed Character Builds section with coverage of all classes, skill trees, recommended armor, weapons, consumables, and much more!
A Walkthrough for all main story quests, detailing the consequences of your choices along the way.